One radioactive isotope of calcium has an atomic mass number of 47. How many neutrons are in the calcium-47 nucleus?

• 17

• 20

• 27

• 47

The electrical charge on an atom as a whole is

• negative

• neutral

• positive

• dependent upon the atomic number

Which type of element typically loses an electron to become an ion?

• gas

• metal

• nonmetal

• semimetal

The elements from this section of the periodic table all belong to the same

• family

• group

• period

• valence

Based on the table, determine the identity of the unknown metal.

• Aluminum

• Magnesium

• Nickel

• Tin

Which element is an example of a metalloid?

• gold

• helium

• iron

• silicon

Based on the table from Ms. Richards, what element from Earth’s crust did Ms. Richards give to Sanjay?

• iron

• calcium

• aluminium

• silicon

Which equation correctly represents the alpha decay of polonium-214?

• Option A

• Option B

• Option C

• Option D

All of the statements are true about the arrangement of elements in the periodic table EXCEPT that the

• noble gases are in the group farthest to the right

• metals are found on the left side of the periodic table

• alkaline earth elements are in the first column, on the left

• transition metals are in the center of the periodic table

What can you interpret from the following solubility graph?

• As temperature increases, so does solubility

• Temperature is not a factor in the solubility of substance

• The solubility of NaCl is affected more by temperature than KBr

• Solubility decreases as you increase the temperature